What's the most petty/pointless/pedantic hill you're willing to die on?
For me, it may be that the toilet paper roll needs to have the open end away from the wall. I don't want to reach under the roll to take a piece! That's ludicrous!
That or my recent addiction to correcting people when they use "less" when they should use "fewer"
I've never actually heard anyone call it X before, unless they were making a joke about the whole thing. Everybody I know still calls it Twitter. Calling it X is just embarrassing.